Drop closure for bottles, receptacles and the like



W. VOSS Dec. 6, "1932.

DROP CLOSURE FOR BOTTLES, RECEPTACLES, AND THE LIKE Filed March 25, 1930 Patented Dec. 6, 1932 lPATE ALTER voss, or BrinnmmnUxoLLN, ERMANY Jmor oLosURE non, BOTTLES, nEoEr'rAcLEsANn THE LIKE a. '7

Application filed March 25, 1930,.Seria1 No.

The invention relates toa drop closure for bottles, receptacles and the like inwhicha cover is rotatably mounted on a closure cap placedupon the neckof the bottle ortdirec tly 5 on an upper closing wallof the bottle neck, this cover and this closure cap or this closing wall being provided with concurring. outlet openings adapted tobe brought into andout of juxtaposition with one another by the turning movement of the cover. I

It has already been proposed to guide the cover in its turning movement by means of two diametrically arranged pins projecting in one or two grooves on the cap. and to insert between the cover and the closure I cap an elastic intermediate padthe elasticity of which is utilized forsecuring the cover in its two end positions for opening and closing the outlet openings. Inthis construction guiding. the cover only in two diametrically situated points of the cap and, therefor, 'per mitting the cover to balance, there is the necessity that the elastic: intermediate pad is applied with a relatively large surface to the whole inner surface of the cover or of the cap respectively in order to obtain an uniform distribution of the elastic action with regard to the securing and the tightening: of the cover and, in this way, to prevent the cover from balancing even inthe case vof unilateral pressure exerted upon the cover.

But when using an intermediate elastic pad having a large area equal or approximately equal to the inner surface of the cover and at the same time the necessary high required for realizing an eflicacious tightening and securing action on the cover, the adherence between the cover or the cap and the elastic} pad is augmented to such an extent that t'he turningvby hand of the cover becomes diflicult owing to the high opposing adherence force.

From this point of view, it is, therefore, de I sirable to reducethe area of the elastic pad so far as possible.,' I I. i 1

' The invention has for its object to overcome the difliculties. arising from these contradictory requirements; To thisendaccording to the invention, the. guidingof the rotatable cover onthe:closurecapioron the bottle neck "is efiected'bynieans of at-least three grooves idropyclosur; of F ig. 1.

the drop' closureof Fig. 1.

438,833, and in Germany Mar n zsiiaae. i

and pins providedin uniform distribution 'on V the periphery of the coverand the closure cap .orbottle neck respectively sogthat fthe p1 1: rality ofthese advantageously arranged guid ing means secures in an eff cacious manner, the end positions of the cover and the tightening. action of the drop closure and, at theelsame time, permits to employ anela'sticfinternlediate pad of a highly reduced area withoutinjuriously influencing this securing and tightening action. Furthermore the cover is prevented in'a simple manner frombalan'cing even in the case of an unilateral pressure e'xerted thereon. Owing to the possibility: of

reducing to a minimum the area ofthe elastic Q5 intermediate pad applied to the surface of the cover or the closure cap, also the adherence between these elements is correspondingly decreased and, consequently, the turning of the cover by hand is facilitated; T his 'con- 7 siderable reduction of the pad surface possible according to the invention includes also the I. possibility to render the elastic pad relatively high and thereby to increase its'tightening and securingiaction. I j iii In the drawing in which a form of construction of theimproved drop' closure is illustrated by wayof example Flg. 1 shows aside view of a drop closure a ing to theinvention.

Fig. 2 is a vertical section through the drop closure of Fig.1. "1 1 j {11 Fig. 3 is a plan view of this dropclos'ure; i

Fig. 4 is ahorizontal section'through the Fig. 5 shows the inside of the'cover of this dropclosure.

Fig. 6is a side view of I the clos 'ure "of v Fig. 7 shows a modifiedform of thefclosiii 'e 9D cap. Mu

consists, of a closure cap 1 which js'c'r'eyved on the open bottle neck I and possesses an; eccentric outlet opening 5 in its upper: wall,

and of a cover 3 which is rotatably mounted l .nected with the cap l. The cover3 shows anpm9 m NT I The 'drop closure shown Figs. andEQi Al 44 4 '4 ll .fddotted lines in Fig. 6, these notches arresting the cover'in -the' 'cl0sing position which eccentric outlet opening 6 which is adapted to be brought in and out of juxtaposition with the outlet opening 5 of the cap 1 by the turnv ing movement of the cover 3.

Between the cap, 1 and the cover 3 there is inserted at the place of opening 6-see Figs.

' 2, 3 and 5'an elastic intermediatepad 8 for instance of rubber whichlies in a little receptacle 7 situated on the inside of the cover 3 and connected therewith. The pad 8 possesses an opening 8" forming the prolongation of the outlet opening 6ofthecover 3.

' short little tube 8" forming the prolongation of the opening 6 of the cover 3 projects from the bottom of the receptacle 7 into the opening 8' of the pad 8 so as tomaintain open in aisure manner theoutlet opening 8' of the elastic pad 8. At the same time thelittle tubei8' "and thefreceptacle 7 prevent the pad 8 from turning relatively to the cover.. The

receptacle 7can be fixed also onthecap 1,

-- in which casethe opening 8 of "the pad8- lies in the direction of the opening 5 of the cap '1. The elastic intermediate pad 8 has a surface highly reduced with respect to the inner surface of the cover 3 and the'adj acent surface of the cap '1 and which may have for instance an ovaliform or circular circumference. I

5--at several, for instance three points uni formly distributed on its periphery with in- The cover 3 is provided see Figs. 4 and mildly directed, projections, for instance pins '4 each engaging with a horizontal or inclined rib14 pr0jecting on the outside of the cap 1' as shown in Fig. 6, whereby the cover 3' is applied to the elastic intermediate pad 8 so as to realize together with this pad a sure tightening action. At theqone .end of each ,rih 14 a notch 14 isprovided in the cap and at. the other end an abutment 14'," limiting the turning movement of thecover 3is foreseen. Atthis latter end of each rib 14 also a notch 4 may be formed as indicated in can be secured .alsoby giving the necessary .high tothe elastic pad 8." The rib's'14,the notchesl4'and 4' and the abutments 14 are uniformlydistributed around the circumference of the cap 1 in the same manner asthe A" V 1 pins 4 of thefcover-3.

erted thereupon. Furtherinorean efiicacious securing ofthefcover 3inthe opening as well I gas i lihe .closi'ng position is realized and a ,fsuretightening action in the closing position is'guaranteed; The reduction of thesur- 7 'cles orthe like, comprising a wall closing cit Qifaceof the. pad 8 to'the possibleminimum permits an easy turning of the cover 3 by hand and; offers the rurmeradvantag that The guiding pins 4 may be provided in:

:steadon thecover 3 also on the cap land in this case the ribs 14 are to be. arranged on c A the cover 3. Furthermore the ribs 14 and the. V

ring-shaped set off edge 11 of the cap 1 may be situated, as shown.in.Fi-g. 6, on the cap 1 at such a relative distance that they'form slits'2 guidingthe pins 4 of the covery The cap 1 can be omitted when the bottle neck itself is executedin the form ofthecap of Fig. '6 with an upperclosing wallc'arrying the eccentric outlet opening 5, and c'arries' 7 I itself the ribs 11, 14 thenotches -14l and-the abutments 14". fl' i i 1 As regards the uniform distribution of the cover guiding means around the" periphery of the cover and the closure cap or'the closing wall of the bottle neck, it may be noted that the advantages'of the invention"are secured to an extent practically'satisfying in many cases also when this regular distribution' is not exactly but only approximately realized. Furthermore the ring shaped set-off edge 11 of the'cap 1 or the bottle neckcan be omitted in which case thenotches 14 of "a coherent ring-shapedjsetQofi edge. This coherent ring-shaped edge conducti'ngthe cover 3' is subdivided in, a manner analogous to Fig. 6,by means of the abutment 14 in a plurality of guidingmeans each bei g 5 1118110 engagement with one of" the pins or 'proj ections 4 of'the cover;

[What I claim is": V

. 1." A dropper closure for bottles, receptacles V or the like, comprising aqwall closing oifthe opening of the bottleor' the like, a rotatable cover on said wall, an intermediate elastic cushion the area of which-is a small fraction of the area of the surfaces of the wall and-cover, said cushion being interposed between said'f' fli wall and'cover, said wall, cover and cushion being provided with openings "adapted to be brought into and out of register by, rotary movement ofpth'e cover, and at least three,

guides for regulating and limiting-the relative izs V movement'of said wall andcover; P a V 2.'A dropper'closure' for bottlesyrecepta the opening of'theibottle .orthe-like, a rotat-" able cover onsaid wall: providedlwjitlria cess, an intermediate elastic cushion the area of which is a small fraction of the area of the surfaces of the wall and cover, said cushion being disposed in said recess and interposed between said wall and cover, said wall, cover and cushion being provided with openings adapted to be brought into and out of register by rotary movement of the cover, and at least three guides for regulating and limiting the relative movement of said wall and cover.

3. A dropper closure for bottles, receptacles or the like, comprising a wall closing off the opening of the bottle or the like, a rotatable cover onsaid wall provided with a recess, an intermediate elastic cushion the area of which is a small fraction of the area of the surfaces of the wall and cover, said cushion.

being disposed in said recess, said cushion being provided with an opening therethrough, a

projection on said cover extending into the opening of said cushion, said wall cover and projection being provided with openings, all of said openings being so disposed as to be brought into register by rotation of said cover,

and at least three guides for regulating and limiting the relative movement of said wall and cover. r v

4. A dropperclosure for bottles, recepta cles or the like comprising a wall closing off the opening of the bottle, or the like, a rotatable cover on said wall,an intermediate elastic cushion in the form of an oval tube disposed on end and interposed between said wall and cover, said tube having end surfaces and an opening extending therethrough, the endsurfaces having an area which is a small fraction V of the area of the adjacent surfaces of the wall and cover, said walland cover being provided with openings, said openings and the openings of the tube being adapted to, be brought into and out of register by rotary movement of the cover, and at least three guides for regulating and limiting the relative movement of said wall and cover.

In testimony whereof I afiix my signature.

WALTER VOSS. 

